Shanghai braces for second day of severe pollution
Shanghai braced for a second day of severe pollution on Monday after the city's Air Quality Index hit record hazardous levels.
The city's environmental authority issued its first orange alert - the second-highest in its four-level warning system - after the index reached 317.
The concentration of PM2.5 - particulate matter smaller than 2.5 microns in diameter that can penetrate the lungs - stood at an average of 266 micrograms per cubic meter in the previous 24 hours, running from noon to noon.
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